WARRANTY COVERAGE

BREAKING PRINCIPLE OF TOOL

 

There are two ways of breaking with a hydraulic breaker.

1) Penetrative (or Cutting) Breaking:

In this form of breaking the moil point or chisel is forced inside the material. This method is most effective in soft, layered low abrasive material. (Figure 1)

 

2) Impact Breaking:

In impact breaking, material is broken by transferring very strong mechanical stress from the tool into material to be broken (Figure 2). Best possible energy transfer between the tool and object is achieved with a blunt tool. Impact breaking is most effective in hard, brittle and very abrasive materials.

 

OPERATING INSTRUCTIONS

 

WARNING: Protect yourself and your neighborhood against flying chips of rock. Do not operate the breaker or carrier if someone is too close to the breaker.

 

1) Prepare the carrier for normal excavation work (Figure 3).

•              Move the carrier to required position.

•              Engage the parking brake.

•              Set the drive to neutral.

•              Disengage the boom lock (if fitted).

 

2) Set the engine speed to the recommended engine PRM.

 

3) Place the tool against the object at 90 degrees(Figure 3).

 

 

•              Avoid small irregularities on the object which will break easily and cause either idle strokes or incorrect working angle.

•              Incorrect working methods may cause failure in the operation of the breaker or housing.

•             

4) Use the excavator boom to press the breaker firmly against the object (Figure 3).

•              Do not pry the breaker with the boom.

•              Do not press too much or too less with the boom.

 

5)  Start operation with breaker.

 

6)   Keep the tool at 90 degrees at all times. If object moves or its surface breaks, correct the angle immediately. Keep feed force and tool aligned.

 

7)   Stop the breaker quickly: Do not allow the breaker to fall down and make idle strokes (blank firing) when the object breaks. The constant idle strokes have a deteriorating effect on the breaker (Figure 4), (figure 5). If the breaker falls down, side plates wear-out more quickly.

 

8) Don't keep striking the breaker more than 15 seconds at the same point. If the rock doesn’t get brake within 15 seconds, stop the breaker and change the position of tool. Doing that you can protect the tool of overheating.(Figure 6)

 

9) To use the breaker most efficiently when breaking big boulders, concentrate on small steps

from the outer edge towards the middle (Figure 7)

 

 

10)  When breaking concrete, hard or frozen ground, never strike and pry with the tool at the same time. The tool may be broken. Bending may be caused by stones inside hard or frozen ground. Be careful and stop striking if you find sudden resistance under the tool (Figure 8).

 

11)  When breaking in cold weather, operate the breaker on soft ground to warm the tool a couple of minutes. After warming of tool, operate the breaker on hard and frozen ground. It will decrease the brittle of tool (Figure 8)

 

12)   Do not use the hammer to sweep the ground of debris. This may damage the breaker and the housing will wear out more quickly. Use the jaws of the housing. (Figure 8)

 

 

 

 13) When demolishing vertical structures (e.g. brick walls), place the tool against the wall at a 90 degrees angle (Figure. 9)

 

 14)  Listen to the breaker's sound while you are using it. If the sound becomes thinner and the impact less efficient, the tool is misaligned with the material and / or there is not enough "pressing" force on the tool. Realign the tool and press the tool firmly against the material.

 

15)  Do not operate the breaker with the carrier's boom stick or bucket cylinders at the end of their stroke (either fully extended or fully retracted). damage to the carrier may result (Figure 10)

 

 

 

16) Do not use the breaker or breaker tools for lifting. Lifting eyes on the breaker are for storage and maintenance purposes (Figure 11)

 

 

 

17) The tool shank must be well greased during operation.  Regular visual inspections during operation are recommended. An unlubricated tool shank requires more frequent greasing intervals. A tool shank covered with excessive grease requires less frequent greasing intervals (Figure 12)

 

 

18) The breaker as a standard assembly, should not be used under water. If water fills the space where the piston strikes the tool, a strong pressure wave is generated. The hydraulic tank and pump of excavator can be damaged. (Figure 13)